Mothers!! Some advice needed..

Ok im trying to decide what the best way to go about this is.
I have 12 seeds on the way and planning a SOG style grow of 3 600W Hydro tables. Now im gona need loads of clones to fill my tables so i need to grow some chunky mother plants. So what im thinking is should i grow my seeds to the point where the ready to flower then take a few clones off each, flower them and keep the clones from the best plants to grow into mothers?? Or should i put them all into flowering to determine sex cut out the males and then put them back into veg untill they are ready to allow me to take the amount of clones i need for my fisrt proper crop. Or should i keep my seed plants growing constantly in veg then take clones off them and flower the clones to determine the sex of the plants they came from... I know the first method would be best as it would allow me to test the product of each plant to know which ones to keep as mothers but im a little pressed for time..
What do you guys think..
Peace ziggy

being pressed for time with this hobby dont work so good, it would be hard. i let my plants veg and they always show sex if givin time. then once your established with a couple solid females, take cuttings. heres a mother haze going on 5 months old.

...her name is Miss Kitty. shes retiring in a couple months. here is some of her kids and her replacement. the little ones i took a couple days ago are for this years outdoor grow coming up.

How are you going to know which plants produce the best buds unless you flower them all the way till done and test the actual buds? Take cuttings and flower the plants you took cuts from. When they show sex, remove males and male cuts. Keep the clones vegging in a separate area and flower the donor until done. Test the donor plants and select the best one. By then the clones vegging will be big and have lots of cutting sites, take more cuts and off you go with your SOG. Yeah that's a lotta friggin clones to fill 3 600's, should be a lotta weed when you're all done though. Just be careful of getting the plant count too high. Makes for a helluva sentencing if caught.

LOL yeah you can imagine how they would drop it in the court "The defendant was found with 1000 plants" Its a basterd but the motto in not the get caught;)

Oh yeah sativus thats a beauty of a haze mummy there whats the smoke like? Is that pure haze looks like theres some indica in that?

usualy i tack "hybrid" on the end. if i dont, someone with a sharp eye will ask. the sativa qualities come out big time in flowering.